A compact residential house is disclosed which includes a pre-fabricated installation panel serving as an outer wall of the residential house and a lifeline system pre-installed on an outer surface of the pre-fabricated installation panel, the lifeline system including a grey water system.

Disclosed is a method for water saving by retrofitting an institutional plumbing fixture having a combination of an integral lavatory basin and a toilet bowel integrally attached thereto by inserting into the fixture a urinal-type collection receptacle having a water inlet opening on its top side and a water outlet opening on its bottom side; and fluidly interposing the receptacle via the inlet and outlet openings between the lavatory drain pipe and the drain trap provided for the plumbing fixture. Also disclosed is an institutional plumbing fixture retrofit for water saving, and a retrofit urinal-type receptacle.

A food waste collector system has a tank, a pump that recirculates water by pumping it from the tank through a spout that discharges into the top of the tank, and an overhead sprayer. The overhead sprayer has a nozzle fluidly coupled by a fresh water valve to a fresh water passage of a water line and by a recirculating water valve to a recirculating water passage of the water line. The overhead sprayer also has a valve handle disposed at the nozzle and coupled to the fresh water valve and the recirculating water valve.

A passive water-and-energy saving washing unit is provided having a first shower sub-assembly and a second shower sub-assembly. The first shower sub-assembly comprises a first water reservoir, for holding a predetermined volume of water for washing at least part of a body, a water heater, for heating water for the first water reservoir, and a shower head, in fluid communication with the first water reservoir for receiving water from the reservoir and providing water spray on the body part. The second shower sub-assembly comprises a second, grey water reservoir, for collecting the sprayed water from the first shower head and running off the body part, a shower head, in fluid communication with the second water reservoir for receiving the water from the reservoir and providing water spray on the body part, and a water pump, for pumping the water from the second water reservoir to the second shower head. A corresponding kit and a method for washing at least part of body with a washing unit are also provided.

A sanitary device (1), comprising: at least one dispenser (2, 3) for a liquid; a basin (4) having a waste (5) for the liquid, and a first thermostat (6) to which at least part of the liquid discharged via the waste (5) can be supplied as circulating liquid, wherein the first thermostat (6) can be used to mix warm water or cold water to the circulating liquid to form a temperature-controlled circulating liquid, and wherein the temperature-controlled circulating liquid can be supplied to the at least one dispenser (2, 3).

A greywater control valve includes: a housing having an input port and at least two output ports; and an insert including a port connection element and a vent. A rotary greywater control valve includes: a housing including: an input port; a first output port; and a second output port; and an insert that rotates within the housing, the insert including: a connection channel that couples the input port to one of the first output port and the second output port; and a vent channel that couples the connection channel to one of the output ports. A fluid control valve includes: an input port located along a first axis; a first output port located along a second axis that is perpendicular to the first axis; a second output port located along the second axis; and a fluid channel that selectively couples the input port to one of the output ports.

This invention harvests abundant, highly usable washing machine rinse cycle water for irrigation and other uses. This is accomplished using two separate devices working together; it is comprised of a valve assembly (FIG. 2B), for diverting this rinse water to a collector and the collector (10) which improves the quality of the water, then distributes it. By closing a single valve (7) during the rinse cycle, the user is effectively watering the landscaping. The rinse water is regenerated during normal household washing so it is not dependent on rain. It does not use power nor does it depend on filters or storing water. It reduces the amount of city water required as well as reducing the volume of waste water generated.

A shower water collection device configured to capture pre-shower water which once full may easily be sealed to prevent contamination of the collected water until the water can be used for another purpose. A shower water collection device further including an inverted umbrella type funnel for increased surface area and enhanced water collection.

The present invention relates to a water disposable system comprised of a connecting member having first side connected to at least one unwanted water source and one valve to control the flow of an unwanted water. A toilet water tank is connected a second side of the connecting member, wherein the water tank comprises: a strainer in a stand pipe; a two float system, wherein a first float is set at a minimum tank volume water line, and a second float set at maximum tank volume water line. A button is coupled with a second float allowing the intake of the fresh water from the fresh water pipe upon actuation. A transparent window or gauge is positioned on the front wall of the tank for determining the volume of water in the toilet tank.

A clean water conservation tank for a toilet providing a secondary clean water source to a toilet holding tank from a secondary holding tank mounted to a surface above and in fluid communication therewith. The secondary holding tank includes an outer container having an actuation body therein, a drain, a hollow puncture body attachable to the drain, and a portable internal container, or a substitute container such as a milk jug, removably disposed therein. The internal container has a one-way spring valve controlling the water level therein. Upon the engagement of the actuation body with the spring valve, the spring valve provides selective fluid communication between the internal container and the toilet holding tank. The puncture body, removably disposed within a cap inside the internal container, is used to puncture the substitute container for water flow through the drain and into the toilet holding tank.